After nearly 6 years since R1/alpha4, Haiku R1/beta1 has been released. See “Release Notes” for the (lengthy) release notes, “Press contact”, for press inquiries … and “Get Haiku!” to skip all that and just...

And here it is running under QEMU/KVM (Alpine Linux host):

I particularly like the Appearance tool, it allows simple configuration of all of the desktop elements’ colours.